org.apache.cassandra.schema

Class LegacySchemaTables

java.lang.Object

org.apache.cassandra.schema.LegacySchemaTables

public class LegacySchemaTables
extends java.lang.Object

system.schema_* tables used to store keyspace/table/type attributes prior to C* 3.0

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	AGGREGATES
static java.util.List<CFMetaData>	All
static java.util.List<java.lang.String>	ALL
static java.lang.String	COLUMNFAMILIES
static java.lang.String	COLUMNS
static java.lang.String	FUNCTIONS
static java.lang.String	KEYSPACES
static java.lang.String	TRIGGERS
static java.lang.String	USERTYPES

Constructor Summary

Constructors

Constructor and Description
LegacySchemaTables()

Method Summary

Methods

Modifier and Type	Method and Description
static java.util.UUID	calculateSchemaDigest() Read schema from system keyspace and calculate MD5 digest of every row, resulting digest will be converted into UUID which would act as content-based version of the schema.
static java.util.Collection<Mutation>	convertSchemaToMutations()
static KSMetaData	createKeyspaceFromName(java.lang.String keyspace)
static CFMetaData	createTableFromName(java.lang.String keyspace, java.lang.String table)
static CFMetaData	createTableFromTablePartitionAndColumnsPartition(Row serializedTable, Row serializedColumns)
static CFMetaData	createTableFromTableRowAndColumnRows(UntypedResultSet.Row result, UntypedResultSet serializedColumnDefinitions)
static Mutation	dropTypeFromSchemaMutation(KSMetaData keyspace, UserType type, long timestamp)
static java.nio.ByteBuffer	functionSignatureWithNameAndTypes(AbstractFunction fun)
static java.nio.ByteBuffer	functionSignatureWithTypes(AbstractFunction fun)
static Mutation	makeCreateAggregateMutation(KSMetaData keyspace, UDAggregate aggregate, long timestamp)
static Mutation	makeCreateFunctionMutation(KSMetaData keyspace, UDFunction function, long timestamp)
static Mutation	makeCreateKeyspaceMutation(KSMetaData keyspace, long timestamp)
static Mutation	makeCreateTableMutation(KSMetaData keyspace, CFMetaData table, long timestamp)
static Mutation	makeCreateTypeMutation(KSMetaData keyspace, UserType type, long timestamp)
static Mutation	makeDropAggregateMutation(KSMetaData keyspace, UDAggregate aggregate, long timestamp)
static Mutation	makeDropFunctionMutation(KSMetaData keyspace, UDFunction function, long timestamp)
static Mutation	makeDropKeyspaceMutation(KSMetaData keyspace, long timestamp)
static Mutation	makeDropTableMutation(KSMetaData keyspace, CFMetaData table, long timestamp)
static Mutation	makeUpdateTableMutation(KSMetaData keyspace, CFMetaData oldTable, CFMetaData newTable, long timestamp)
static void	mergeSchema(java.util.Collection<Mutation> mutations) Merge remote schema in form of mutations with local and mutate ks/cf metadata objects (which also involves fs operations on add/drop ks/cf)
static void	mergeSchema(java.util.Collection<Mutation> mutations, boolean doFlush)
static java.util.Collection<KSMetaData>	readSchemaFromSystemTables()
static void	saveSystemKeyspaceSchema() add entries to system.schema_* for the hardcoded system definitions
static void	truncateSchemaTables()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

KEYSPACES

public static final java.lang.String KEYSPACES

See Also:

Constant Field Values

COLUMNFAMILIES

public static final java.lang.String COLUMNFAMILIES

See Also:

Constant Field Values

COLUMNS

public static final java.lang.String COLUMNS

See Also:

Constant Field Values

TRIGGERS

public static final java.lang.String TRIGGERS

See Also:

Constant Field Values

USERTYPES

public static final java.lang.String USERTYPES

See Also:

Constant Field Values

FUNCTIONS

public static final java.lang.String FUNCTIONS

See Also:

Constant Field Values

AGGREGATES

public static final java.lang.String AGGREGATES

See Also:

Constant Field Values

ALL

public static final java.util.List<java.lang.String> ALL

All

public static final java.util.List<CFMetaData> All

Constructor Detail

LegacySchemaTables

public LegacySchemaTables()

Method Detail

saveSystemKeyspaceSchema

public static void saveSystemKeyspaceSchema()

add entries to system.schema_* for the hardcoded system definitions

readSchemaFromSystemTables

public static java.util.Collection<KSMetaData> readSchemaFromSystemTables()

truncateSchemaTables

public static void truncateSchemaTables()

calculateSchemaDigest

public static java.util.UUID calculateSchemaDigest()

Read schema from system keyspace and calculate MD5 digest of every row, resulting digest will be converted into UUID which would act as content-based version of the schema.

convertSchemaToMutations

public static java.util.Collection<Mutation> convertSchemaToMutations()

mergeSchema

public static void mergeSchema(java.util.Collection<Mutation> mutations)
                        throws ConfigurationException,
                               java.io.IOException

Merge remote schema in form of mutations with local and mutate ks/cf metadata objects (which also involves fs operations on add/drop ks/cf)

Parameters:

mutations - the schema changes to apply

Throws:

ConfigurationException - If one of metadata attributes has invalid value

java.io.IOException - If data was corrupted during transportation or failed to apply fs operations

mergeSchema

public static void mergeSchema(java.util.Collection<Mutation> mutations,
               boolean doFlush)
                        throws java.io.IOException

Throws:

java.io.IOException

makeCreateKeyspaceMutation

public static Mutation makeCreateKeyspaceMutation(KSMetaData keyspace,
                                  long timestamp)

makeDropKeyspaceMutation

public static Mutation makeDropKeyspaceMutation(KSMetaData keyspace,
                                long timestamp)

createKeyspaceFromName

public static KSMetaData createKeyspaceFromName(java.lang.String keyspace)

makeCreateTypeMutation

public static Mutation makeCreateTypeMutation(KSMetaData keyspace,
                              UserType type,
                              long timestamp)

dropTypeFromSchemaMutation

public static Mutation dropTypeFromSchemaMutation(KSMetaData keyspace,
                                  UserType type,
                                  long timestamp)

makeCreateTableMutation

public static Mutation makeCreateTableMutation(KSMetaData keyspace,
                               CFMetaData table,
                               long timestamp)

makeUpdateTableMutation

public static Mutation makeUpdateTableMutation(KSMetaData keyspace,
                               CFMetaData oldTable,
                               CFMetaData newTable,
                               long timestamp)

makeDropTableMutation

public static Mutation makeDropTableMutation(KSMetaData keyspace,
                             CFMetaData table,
                             long timestamp)

createTableFromName

public static CFMetaData createTableFromName(java.lang.String keyspace,
                             java.lang.String table)

createTableFromTablePartitionAndColumnsPartition

public static CFMetaData createTableFromTablePartitionAndColumnsPartition(Row serializedTable,
                                                          Row serializedColumns)

createTableFromTableRowAndColumnRows

public static CFMetaData createTableFromTableRowAndColumnRows(UntypedResultSet.Row result,
                                              UntypedResultSet serializedColumnDefinitions)

makeCreateFunctionMutation

public static Mutation makeCreateFunctionMutation(KSMetaData keyspace,
                                  UDFunction function,
                                  long timestamp)

makeDropFunctionMutation

public static Mutation makeDropFunctionMutation(KSMetaData keyspace,
                                UDFunction function,
                                long timestamp)

makeCreateAggregateMutation

public static Mutation makeCreateAggregateMutation(KSMetaData keyspace,
                                   UDAggregate aggregate,
                                   long timestamp)

makeDropAggregateMutation

public static Mutation makeDropAggregateMutation(KSMetaData keyspace,
                                 UDAggregate aggregate,
                                 long timestamp)

functionSignatureWithTypes

public static java.nio.ByteBuffer functionSignatureWithTypes(AbstractFunction fun)

functionSignatureWithNameAndTypes

public static java.nio.ByteBuffer functionSignatureWithNameAndTypes(AbstractFunction fun)